1. ON/OFF function of power supply; it will automatically shut down after standby for 5 minutes; 2. Four-bit intelligent power display provides an accurate reflection of battery charge level relative to riding distance; 3. High, middle, and low gears with imitation torque boost, gear switch, and gear indicator display; includes gear memory function that automatically restores the previous gear state upon power-on; 4. 6 km/h boost function with blinking boost light during activation, usable while driving to make vehicle operation easier; 5. Under-voltage indication function; under-voltage indicator flashes when battery voltage is low; 6. Utilizes five-line digital communication with self-setting function for versatile parameters; allows user adjustment of motor parameters, velocity parameters, and speed settings according to different models; 7. Instrument offers high interchangeability; different units can be directly swapped and will retain compatible data parameters; 8. Compatible with power supply voltages of 24V, 36V, and 48V; Color: Black Material: Plastic Package Contents: 1 x Display Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.